lecture 32 posted W11

lecture 32 posted W11 - Lecture 32 (4-4-11) - Water and...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
1) Review plant cell structures and describe basic plant tissues 2) Describe the structures of xylem and phloem 3) Describe water potential and the cohesion- tension theory 4) Explain how sugars move from their sites of synthesis to other parts of the plant. Lecture 32 (4-4-11) - Water and sugar transport in plants
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Molecules; Chemical bonds; Free energy Lipids Amino acids nucleotides carbohydrates membranes proteins Membrane transport Membrane proteins cytoskeleton enzymes DNA RNA Metabolism Sugar transport Electrolyte transport Kidney Nerve cells Transporters and pumps Receptors Cell-cell communication Chemical signaling development Replication transcription translation Glycolysis Fermentation Krebs cycle Photo- Synthesis & Calvin cycle Cell cycle Regulation of transcription biotechnology genomics Microbes Biology 172 flowchart (lecture 32) cancer epigenetics
Background image of page 2
Plant Form and Function A plant's body is devoted to harvesting diffuse resources and concentrating them in cells and tissues. Although all plant bodies function in this way, the 300,000 species living today are remarkably diverse in size and shape.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
Review Plant Cell Structure Huge diversity in size, shape, composition, function Either differentiated or undifferentiated (rapidly dividing meristematic cells)
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Tissues = groups of cells functioning as a unit Four types of tissues in plants: 1. Meristematic tissue = rapidly dividing, undifferentiated, responsible for continued growth 2. Dermal tissue (or epidermis) = single layer of cells covering plant; secretes waxy cuticle (reduces evaporation and barrier against pathogens) 3. Ground tissue = bulk of plant body, complex (several types of cells, many specialized for structural support with a secondary cell wall ) 4. Vascular tissue = specialized for long-distance transport of water and nutrients Xylem conducts water and ions from root system to shoot system Phloem conducts sugars, amino acids, chemical signals, etc. through plant body
Background image of page 6
Figure 36-16 Cross sections: Meristematic tissue Leaf Stem Meristematic tissue Root Vascular tissue system (red) Dermal tissue system (brown) Dermal tissue system (brown) Ground tissue system (gray) Ground tissue system (gray) Vascular tissue system (red) S h o t s y e m Root system Distribution of Plant Tissues
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 36

lecture 32 posted W11 - Lecture 32 (4-4-11) - Water and...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online